Test signal generator



FIG. 1 is a front perspective view of a test signal generator according to the present invention;

FIG. 2 is a front plan view of the generator of FIG. 1;

FIG. 3 is a back plan view of the generator of FIG. 1;

FIG. 4 is a top plan view of the generator of FIG. 1;

FIG. 5 is a bottom plan view of the generator of FIG. 1;

FIG. 6 is a left plan view of the generator of FIG. 1; and,

FIG. 7 is a right plan view of the generator of FIG. 1. 

The ornamental design for a test signal generator, as shown and described. 